Liquid applying device



May 8, 1962 R. G. ALEXANDER 3,032,801

LIQUID APPLYING DEVICE I pianta.

Filed Dec. 4, 1959 I; Il

Il l [lll] A rrr Inited States Patent O 3,032,801 LIQUID APPLYING DEVICE Ralph G. Alexander, 10 Whakariri Ave., Westshore,

Napier, New Zealand Filed Dec. 4, 1959, Ser. No. 857,404 3 Claims. (Cl. 15-555) This invention relates to a device used for applying glue or viscous liquid to a surface.

In woodworking trades and that of cardboard box manufacture devices such as brushes or rollersV are. employed to apply glue, and usually result in a long messy job except where large production warrants gluing machines, and even these have been found unsuitable for certain purposes.

It is, therefore, an object of the present invention to provide a novel form of liquid applying device that is simple in form and will have a clean, quick and economical use in applying the liquid or glue.

Generally, the invention covers a liquid applying device comprising a container for the liquid, an underneath throat open to the container and a piece of resilient material mounted across the other end of the throat, the piece having an outer or lower serrated edge, whereby liquid may pass from the container to the resilient piece with the serrated edge which is used for applying the liquid to a surface.

In further describing the invention, reference will be made hereinafter to the accompanying drawing, in which:

FIGURE 1 is a sectional side elevation of a device for applying the liquid to a surface;

FIGURE 2 is a partial sectional front view thereof;

FIGURE 3 is a similar view to FIGURE 1, but the preferred form of the device;

FIGURE 4 is a partial sectional front View thereof, and

FIGURE 5 is a sectional plan taken on the line 5 5 in FIGURE 3.

As illustrated by FIGURES 1 and 2, the container 10 of the device can `be as an open topped receptacle with a removable top cover 11. This container has a suitable handle 12 and can be made in metal or plastic.

The throat 13 is cast integral with the container. This throat 13 depends at an angle from the container 10 and decreases in cross-sectional area toward its lower end.

Over the lower end of this throat 13, Which is disposed substantially vertical, the resilient or rubber piece as a strip 14 is fixed. This can be eifected by slots provided in the metal by holding lugs 15 at the mouth and =a metal backing strip 16 holding the rubber strip in the metal lugs 15. This rubber strip 14 is formed with the lower edge 14a serrated.

This device can be made of any size that can be conveniently handled and hold the necessary amount of the glue or liquid, with any width of serrated edge or lip to give a width of continuous liquid stream depending on such edge width.

In use, with the action of drawing the device over the surface S to which glue has to be applied, the serrated rubber edge 14a is dragged slightly away from the mouth of the throat and a stream of the liquid L will run out and be spread evenly by such edge.

In FIGURES 3 and 4 of the drawing there is illustrated the preferred form of the device. In this instance, the container of the device is cylindrical and has a removable top cover 11'; a suitable handle 12 is attached to the container 10'. The throat 13' is made as part of the container by a lower wall `sloping to its bottom end.

The various width of liquid streams for this form of the device can be obtained by the use of a rubber stopper piece y17 inserted in the throat 13' which pieces, are made V3,032,801 Patented May 8, 1962 ice plainv to have no projections or serrations, do not open when the device is draggedV across the surface to which liquid is to be applied. Over the lower end of the throat 13' is the resilient or rubber serrated strip 14 held by the clamping lugs 15' and the plain rubber piece 17 and a plain spring clamp 18. As this clamp is pushed forward its shoulders pivot on the holding lugs 15', thus releasing itself. The rubber pieces 17 and 14 are then released, and the parts disengaged for cleaning, or for incorporating different size ones. As previously mentioned the plain piece 17 is set up to be free from the surface so that various streams can be obtained by using different combinations of serrated strips 14 and plain strips 17. In use the serrated strip 14' bends back under pressure andl allows the liquid to owsimilarly as in the application of the firstform of the device.

In this preferred form of the device, there is also included a plunger 19 and a spring-loaded handle lever 20 located above the handle 12' and to move up and down in two saddle guides 21, 21' aixed to the top of the cover 11. A hole is provided in the handle lever 20 for the plunger 19 to pass through and also a washer 19A excepting one edge that has projecting lugs 19a, as shown in FIGURE 5.

The plunger 19 protrudes through la hole in the top cover 11' and on the lower end has a pair of circular plates 22, 22' 'between which is a thick moulded rubber washer 23, of a diameter so that it frictionally engages the internal face of the circular container 10', but may be moved under action of the lever 20. A nut 24 holds the plates 22, 22 land the washer 23 permanently onto the plunger 19 all of which move as a unit, up and down within the container. The top washer 22 is a fixture to the plunger 19 and should the washer 23 need replacing the nut 24 is unscrewed and bottom washer 22 and the nut 24 can be cleaned and replaced thereon.

When the appliance is held, the handle 20 and handle lever 12' are enclosed by the hand and when it is desired to depress the plunger 19 and its washer 23 in order to force liquid from the container 10 through throat 13', the handle 20 and the lever 12' are squeezed together.

The handle 20 pivots under the top of the guide 21 and slides down inside the guide 21'. When the handle 20 is squeezed to lever 12', the handle 20 exerts downward pressure on the edge of the washer 19A which causes the Washer to bind on plunger 19 thus transferring the pressure to the plunger and moves it in a downward direction. The extra length of plunger 19 above the lever 20 is to enable the washer 23 to move to the bottom of the container 10' in order to expel all its contents, and still leave enough length for the handle 20 to work on. This will enable heavy glues to be expelled under pressure, and all glues to lbe applied to vertical or lsloping surfaces.

When the pressure is released the spring 25 returns the handle 20 to its original position. The pressure from the compressed spring on the washer causes it to slide the Washer 19A up the plunger 19 Without drawing up the plunger. Thus a continuous downward movement of the plunger is maintained as long as the handle and the lever are repeatedly squeezed together. When the handle 20 is in its normal position the plunger 19 can be drawn upwards by hand for removal of the top 11' for recharging of the container.

The cover 11' has fixing lugs 11" set at an angle and the cover locks with a slight screwing action and is sealed with a rubber gasket 26.

Having now described my invention, what I claim is:

1. A liquid-applying device comprising a container consisting of an open-topped receptacle having a cylindrical surface, a xed handle, removable top cover and bottom sloping wall, means to maintain said top cover on said receptacle, a discharge mouth disposed in the lower portion of said receptacle, said discharge mouth formed by a lower portion of said bottom sloping wall and a portion of said cylindrical surface adjacent thereto, lugs having inwardly directed portions mounted on said receptacle at the sides of said mouth, a piece of resilient material for applying liquid to a surface removably mounted over said mouth, holding means mounted within the inwardly directed portions of said lugs to retain and 'bias said piece of resilient material against said mouth, a plunger mounted through an aperture in said cover, a handle lever disposed above said xed handle, a washer associated with said xed handle and said plunger, guides mounted on said cover for guiding the movement of said handle lever, another Washer mounted to the lower-end of said plunger for movement within said receptacle upon movement of said plunger, and a compression spring mounted on said plunger between said handle lever and said cover for returning said plunger and said other washer from a lower position within said receptacle.

References Cited in the le of this patent UNITED STATES PATENTS 244,260 Knapp July 12, 1881 580,769 Carter Apr. 13, 1897 854,939 Eide May 28, 1907 1,337,998 Church Apr. 27, 1920 2,704,379 Bunker Mar. 22, 1955 2,808,603 Wright Oct. 8, 1957 

